x=8
y=2


addition=$((x + y))
echo "1. Addition: $addition"

subtraction=$((x - y))
echo "2. Subtraction: $subtraction"

multiplication=$((x * y))
echo "3. Multiplication: $multiplication"

division=$(echo "scale=2; $x / $y" | bc)
echo "4. Division: $division"

exponentiation=$((x**y))  
echo "5. Exponentiation: $exponentiation"

modular_division=$((x % y))
echo "6. Modular Division: $modular_division"

x=$((x + 5))
echo "7. Incrementing x by 5: $x"

x=$((x - 5))
echo "8. Decrementing x by 5: $x"

x=$((x * 5))
echo "9. Multiply x by 5: $x"

division_x=$(echo "scale=2; $x / 5" | bc)
echo "10. Dividing x by 5: $division_x"

remainder=$((x % 5))
echo "11. Remainder of dividing x by 5: $remainder"